The Mercedes-Benz SL, a name synonymous with luxury and open-top motoring, continued its legacy through the mid-to-late 1970s. These models, part of the R107 generation, represented a blend of classic Mercedes styling, robust engineering, and surprising reliability. Many examples grace New Zealand roads, cherished for their timeless appeal and boulevard cruising capabilities. This AEO will provide the New Zealand perspective on this model focusing on WOF and common maintenance problems.
Common issues in New Zealand include: Rust in body panels (sills, floor, around lights, under windscreen). Deteriorating rubber components (suspension bushings, seals). Leaks in the soft top mechanism and roof. Electrical issues relating to age and oxidisation. Fuel injection system problems. Engine overheating can sometimes occur, stemming from cooling system neglect.
WOF tips
WOF failures often relate to: Rust in structural areas. Deteriorated suspension components (ball joints, bushings). Brake system issues (corrosion, leaks). Lighting malfunctions (headlights, indicators). Windscreen wiper operation. Check the condition of the exhaust system, as corrosion is common.
About the Mercedes-Benz SL 450 SLC
The 1975-1979 SLs offered a range of engine options, typically inline-sixes or V8s, offering a refined driving experience rather than outright performance. The build quality typical of Mercedes-Benz at the time means many examples have survived well, however, these vehicles are around 50 years old. The automatic transmission is generally reliable but should be regularly serviced. Inspect rust thoroughly, especially around the floor pans, sills, and wheel arches – a common issue for vehicles of this era. Suspension components, while durable, may require replacement after decades of service. Be aware that parts can be expensive, often requiring specialist sourcing. Many cars have been converted to run on modern fuel and many have had electronic ignition retro fitted.
Questions owners ask
What are the most common rust spots to check on a 1975-1979 Mercedes-Benz SL before buying one in New Zealand?
When inspecting a 1975-1979 Mercedes-Benz SL, pay close attention to rust in the floor pans, sills, and wheel arches. Other common areas in New Zealand include around the lights and under the windscreen. Thorough inspection is crucial due to the age of these vehicles.
What are common WOF failure points for a 1975-1979 Mercedes-Benz SL in New Zealand?
WOF failures for the 1975-1979 Mercedes-Benz SL in New Zealand frequently relate to rust in structural areas, deteriorated suspension components (like ball joints and bushings), brake system issues (corrosion, leaks), lighting malfunctions (headlights, indicators), and windscreen wiper operation. The exhaust system should also be checked for corrosion.
Where can I get replacement rubber components for my 1975-1979 Mercedes-Benz SL in NZ?
CARFIX stocks 128 SKUs for the 1975-1979 Mercedes-Benz SL. While specific rubber components like suspension bushings and seals may require specialist sourcing due to the vehicle's age, it's worth checking the CARFIX range first. If not available directly, our team can often assist in finding reputable suppliers.
What kind of maintenance schedule should I follow for my 1975-1979 Mercedes-Benz SL?
The recommended service interval for the 1975-1979 Mercedes-Benz SL is every 10,000km. Given the vehicle's age, it's also important to regularly inspect for deteriorating rubber components, potential leaks in the soft top, and address any electrical issues promptly. Regular servicing of the automatic transmission is also highly recommended.
Are there any common engine issues to be aware of with the 1975-1979 Mercedes-Benz SL?
While the inline-six and V8 engines are known for their refined driving experience, common issues can include fuel injection system problems and engine overheating, often stemming from cooling system neglect. Many vehicles in New Zealand have also been converted to run on modern fuel or had electronic ignition retrofitted.